Hailun HG178 Grand Piano: What Makes It Special?

The Hailun HG178 Grand Piano is a 178 cm grand designed to combine substantial acoustic performance with carefully selected materials and construction features. At 5 ft. 10 in. (178 cm) long and 145 cm wide, it offers the scale of a serious grand piano while remaining practical for homes, studios, teaching environments and smaller performance spaces.

What makes the HG178 particularly interesting is the combination of its soundboard design, Röslau strings, maple bridges, multi-ply pin block, Hailun piano Performance Plus action and reinforced German hammer felt.

Rather than focusing only on size, these construction details help explain how the HG178 is designed to produce its tonal character and playing response.

178 cm Grand Piano: A Practical Performance Size

At 178 cm, the HG178 sits between a compact baby grand and a larger concert grand.

Its length provides room for a substantial string scale, the longer bass-string design can contribute to greater tonal depth and a more developed low register.

The HG178 also has a 1,550 sq. in. soundboard area, providing a substantial surface for converting string vibration into acoustic sound.

This makes the piano suitable for:

• Serious home pianists
• Advanced students
• Piano teachers
• Private studios
• Music schools
• Smaller recital venues
• Professional practice environments

For pianists who want a substantial grand without moving to a two-metre-plus concert instrument, the 178 cm format offers an attractive balance.

Mountain Spruce Soundboard with Meniscus Coating

The soundboard is one of the most important components of an acoustic piano.

The HG178 uses all mountain spruce for its soundboard, with a 15-degree spruce meniscus coating designed to provide climatic resistance and flexibility.

The soundboard needs to respond efficiently to vibrations from the strings while maintaining structural stability. Its construction therefore has an important influence on the instrument’s resonance, projection and tonal response.

The climatic-resistance aspect is particularly relevant for markets such as Malaysia, where temperature and humidity can be significant considerations for acoustic piano owners.

Of course, environmental stability and proper piano maintenance remain important even with a soundboard designed with climatic resistance in mind.

Röslau Strings and Duplex Scaling

The HG178 uses Röslau strings with duplex scaling.

The piano also features a substantial 45.5-inch No. 1 bass string. These specifications contribute to the design of the piano’s tonal scale and are part of the engineering behind its bass response and overall resonance.

For pianists, the objective is not simply greater volume, but a balanced sound that allows the bass, middle and treble registers to work together musically.

The final tonal character is also influenced by hammer voicing, regulation, room acoustics and tuning.

Hand-Notched Maple Bridges

Another notable construction feature is the HG178’s hand-notched maple bridges.

The bridge transfers the vibration of the strings to the soundboard, making it an important connection between the strings and the instrument’s acoustic structure.

Hand-notched construction reflects the attention given to the relationship between the strings and soundboard.

Combined with the spruce soundboard and Röslau strings, the bridge design forms part of the HG178’s overall tonal system.

Multi Laminate Pin Block

The HG178 uses multi-laminated pin block which constructed with over 19 layers of select, high quality hard rock maple.

The pin block has an important structural role because it holds the tuning pins securely. Stable tuning-pin support is essential for maintaining the piano’s pitch and allowing technicians to tune and service the instrument effectively.

The use of multiple layers of quarter-sawn maple is part of the piano’s structural design and contributes to the stability required for a grand piano intended for long-term use.

Hailun Piano Performance Plus Action

The piano features Hailun piano Performance Plus action, which is designed with precision and delicate craftmanship based on a German design.

For pianists, the action is where the instrument’s mechanical design becomes a playing experience. The action determines how the pianist’s movement at the key is transferred to the hammer and ultimately to the strings.

The HG178’s action includes:

• European hornbeam action parts
• Aluminium action rail with maple core
• Hard maple serrated hammer rail

These components are designed to provide a combination of stability, responsiveness and precise movement.

A well-regulated action allows the pianist to control articulation, repetition and dynamics more precisely.

Reinforced German Hammer Felt

The HG178 uses reinforced German hammer felt.

Hammer felt has a major influence on the tone produced when the hammers strike the strings. The density, structure and voicing of the felt can influence how bright, warm, powerful or nuanced a piano sounds.

The use of reinforced German felt is therefore an important part of the HG178’s tonal design.

However, the final sound is not determined by the felt alone. Professional voicing and regulation are essential for achieving the desired tonal balance.

Birdseye Maple Inner Rim and Reinforced Lid

The HG178 come with an elegant book matched Birdseye Maple inner rim, which is an exclusive feature only seen on high end European grand pianos.

The rim is a major structural component of a grand piano, providing the foundation around which the soundboard and other components are integrated.

The piano also features a bevelled and reinforced lid, combining structural considerations with the visual design of the instrument.

The result is a grand piano designed to look substantial while supporting the acoustic and mechanical requirements of the instrument.

Practical Construction for Climate and Stability

Several of the HG178’s specifications are particularly relevant to tropical markets.

The soundboard incorporates a 15-degree spruce meniscus coating for climatic resistance and flexibility, while the multi-ply maple construction used in the pin block and rim provides structural stability.

However, piano owners should not assume that these features eliminate the need for environmental care.

In Malaysia and other tropical climates, it is still important to avoid placing the piano in direct sunlight, beside strong air-conditioning airflow or in areas with significant temperature and humidity fluctuations.

Regular tuning and professional maintenance remain essential.

What Does the Hailun HG178 Feel Like to Play?

The combination of its 178 cm scale, grand action, European hornbeam action parts and reinforced German hammer felt is designed to give the HG178 a responsive and expressive playing character.

The pianist should be able to explore a broad dynamic range, from delicate passages to more powerful playing.

The larger soundboard area and bass-string scale also contribute to the instrument’s ability to produce a substantial acoustic sound.

However, every individual piano can sound and feel slightly different. Regulation, voicing, tuning and room acoustics all influence the final playing experience.

Who Is the Hailun HG178 For?

The HG178 can be an attractive choice for pianists who want a serious grand piano without the size of a full concert grand.

It can suit:

• Advanced students
• Serious home pianists
• Piano teachers
• Professional musicians
• Private studios
• Music schools
• Smaller recital spaces

Its 178 cm length provides a useful compromise between acoustic performance and practicality.

Final Thoughts

What makes the Hailun HG178 Grand Piano special is the combination of its 178 cm scale and detailed construction.

Rather than being defined by size alone, the HG178 is built around the relationship between its sound-producing components, structural materials and action.

For pianists looking for a grand piano that offers substantial acoustic performance while remaining practical for a variety of spaces, the Hailun HG178 is a model worth experiencing in person.

If you would like to learn more about Hailun Piano, its craftsmanship, history, sound and suitability for different players, you may also read our Hailun Piano Malaysia guide for a broader introduction to the brand.